Faria Chesapeake Black 4" Tachometer - 4000 RPM (Diesel) [33742] Brand_GROCO The Lenco ballscrew design is

The Lenco ballscrew design is more reliable

Volume -  1

Guides boats into your slip easily

Easily replaceable

Faria Chesapeake Black 4" Tachometer - 4000 RPM (Diesel) [33742] Brand_GROCO The Lenco ballscrew design isChesapeake Black 4" Tachometer 4000 RPM (Diesel) (Mechanical Takeoff & Var Ratio Alt) Perimeter lighted Black dial with stylish Blue and White graphics, polished stainless steel bezel, contoured white pointer and domed glass lens. Electronic tachometers work by counting pulses generated by the ignition system, alternator, tach signal generator or magnetic pickup sender. The tach is hooked up to +12VDC, Ground and one of the signal sources listed